A new research article outlines another aspect of Quantum Cryptography
In "No Signaling and quantum key distribution", a new paper published in Physical Review Letters 95 (010503 – 2005), Barrett, Hardy and Kent give the first example of a way of implementing quantum cryptography which is provably secure - even if quantum theory is incorrect, so long as a successor theory shares with quantum theory the features which make faster-than-light signaling impossible. The scheme can be implemented by two parties (Alice and Bob) who know quantum theory but know nothing about the precise form of any successor theory, and is secure against a "post-quantum" eavesdropper, Eve, even if she knows the successor theory and has arbitrary post-quantum technology available to her.
Jonathan Barrett | Source: EurekAlert!
Further information: www.perimeterinstitute.ca
More articles from
Physics and Astronomy:
Hubble sees magnetic monster in erupting galaxy
21.08.2008 | European Space Agency
Phoenix Mars Lander Explores Site By Trenching
21.08.2008 | University of Arizona
Cornell to Show Off its 100-mpg Car-in-progress at New York State Fair
21.08.2008 | Automotive Engineering
What We Don't Know About Liquefaction Could Hurt Us
21.08.2008 | Earth Sciences
Getting to the Root of the Matter
21.08.2008 | Ecology, The Environment and Conservation